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Blobfish. A rare and threatened inhabitant of the deep sea

Everyone is good at something: «No one is more patient than me. I simply wait

until my dinner comes to me - it’s much more comfortable and saves energy. My

realm is 1000 metres deep on the sea floor so I have to be careful with my

reserves of oxygen.»

Aye-aye. The aye-aye from Madagascar

Everyone is good at something: «I hear everything. I detect the hiding-places

of my prey with my sophisticated sound-technique. Even the best-hidden insect

larvae can’t escape me.»

Star-nosed Mole. Equipped with a highly-sensitive sense of touch

Everyone is good at something: «I can detect my prey quicker than you can

blink. I am almost blind, but with my star-nose I „see“ everything. »

Horseshoe Bat. Getting around with ultrasound

Everyone is good at something: «My sense of direction is impressive as

ultrasound shows me the way through the night. I never get lost. I spend the

day as a layabout, but hanging upside down.»

Puss moth caterpillar. Please don’t touch!

Everyone is good at something: «My defence tactic always works. When people

touch me they regret it later. And my enemies ignore my warning only once; I’m

not very agreeable to eat.»

Portrait:

Name: Blobfish, Psychrolutes marcidus

Occupation: Deep-sea diver, survivalist

Special feature: My patience when seeking food

Portrait

Name: Aye aye, Daubentonia madagascariensis

Occupation: Tree-climber, sound specialist

Special feature: My round eyes

 

Portrait

Name: Sternnasen-Maulwurf, Condylura cristata

Occupation: Tunnel builder, touch expert

Special feature I am quicker than all others

Portrait

Name: Horseshoe bat, Rhinolophidae is my family name

Occupation: Night flight pilot, navigation expert

Special feature: horseshoe-shaped nose

Portrait

Name: (biologists call me Megalopyge opercularis)

Occupation: Metamorphosis and defence expert

Special feature: My poisonous hair

With its tiny eyes it looks like a creature from another world. The blobfish has been nominated as the «world’s most miserable looking» marine animal. It is named after a drop coming from its mouth. The scientists who caught this fish in 2003 between Australia and New Zealand called it ‚Mr.Blobby’. You can admire the preserved fish today in the Australian Museum in Sydney.

 

This rare species that lives on the ocean floor in the deep sea, belongs to the group psychrolutidae or fathead sculpins. With its bare head and body it is not exactly an attractive fish, but it is perfectly adapted to its habitat 800 to 1200 metres below sea level. In truth this 30 centimeter-long fish is a genuine survivalist.

 

The body of the blobfish is predominantly a gelatinous mass, almost exactly as dense as water. It does not have a swim bladder like other fish as it would be crushed by the high water pressure.

The blobfish has practically no muscle, and waits on the sea floor until food passes. Its diet contains crabs, molluscs and sea urchins. This frugal fish gets by on little energy and scarce oxygen.

 

In January 2010 scientists were the bearers of bad news: the blobfish is threatened with extinction. They see deep-sea fishing with its enormous nets dragged over the ocean floor as the reason for this. It is not only sought-after fish and crabs that are caught in these nets but many other forms of life. The blobfish, which apparently oocurs only in Australian waters, is threatened. If this species is to have a chance of survival, dragnet fishing must be limited or forbidden. In any case, the oceans must have enough protected areas just like the mainland.

 

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Large ears, round eyes. The animal gets its name (Ger: das Fingertier) from its special fingers, in particular the long, thin middle finger. The nocturnal aye-aye is a primate, related to chimpanzees, gorillas and orang-utans. It is not entirely clear where the name ‚aye-aye’ came from; perhaps from the noises these animals make when fleeing. 

 

Aye-ayes belong to the same class as the lemur, which includes around 100 species only occurring in Madagascar. They live in the rainforests on the eastern coast and in the deciduous forests of the west and northwest.

 

Thanks to their clinging ability, Aye-ayes are very good climbers. They spend the day in self-built, egg-shaped nests of leaves and twigs located in the crutches of trees. At night these animals leave their nests in search of food. They feed predominantly on insect larvae that live in or under the bark of trees.

They knock on the wood with their fingers and can locate cavities made by larvae with their excellent hearing. The aye-aye gnaws holes in the bark with its teeth and digs out the larvae from the wood with its long, thin middle finger. The aye-aye occupies a similar ecological niche to that of the European and North American woodpecker.

 

In some areas of Madagascar it is considered a bad omen when an aye-aye appears. But widespread deforestation has contributed much more to the endangerment of this species than superstition. The species is now protected by law, but the aye-aye only has a future if its habitat – Madagascar’s forests – remain protected.

 

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It digs long tunnels in damp soil and is a good swimmer. This mole from eastern North America has become world famous for its star-shaped nose, made of 22 soft appendages equipped with an unbelievable number of tactile sensors. With these the almost blind mole finds its food unerringly: worms, insects and molluscs.

 

Almost all 30 species of mole have special touch organs on their noses, but the star-nose mole has taken it to extremes –a unique development in the animal kingdom. The highly-sensitive tactile organ allows the star-nosed mole to detect prey and decide if it is edible within a fraction of a second (an average of 230 milliseconds). Its movements are so quick that the human eye cannot follow them.

The star-nosed mole lives in eastern USA and Canada in damp soil that is not well drained. They can be found in swampy or marshy areas and also in forests. They live loosely together in small groups.

 

Moles are not looked on favourably in agricultural territory because of their digging but they do consume insects and other pests. Their tunnels aerate the earth, thereby aiding the organic activity of soil. The worldwide loss of fertile ground is one of the greatest problems for humankind’s future food security.  

 

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That which birds do in the daytime, bats do at night. They devour enormous numbers of insects and are the only animals that catch flying insects during the night. In one night a bat consumes a quarter to a third of its own bodyweight in insects. The ecological importance of this creature lies predominantly in pest control.

 

Bats have been around for 60 million years. The horseshoe bat is in a family with around 70 other species from Europe, Asia, Africa and Australia. The name of this group of bats comes from the horseshoe-shaped skin formation on their noses.

 

Bats are mammals. They emit ultrasound that lies outside the realm of human hearing. An echo-locating system allows them to fly at night. Bats also have very good spatial recollection.

 

A bat detector translates ultrasound emitted by bats into sounds that can be heard by humans. Using the different calls, experts can reliably distinguish individual species. Bats are have high demands of their habitat and for this reason many species are threatened. They are dependent on richly structured landscapes, but these are disappearing. Additionally, environmental chemicals disturb the bats and many suitable habitats are lost through building renovation. 

 

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Sometimes first glances are deceptive. The ‚Puss moth caterpillar’ looks harmless, but the hairs on its body are poisonous. In the event of contaact with skin, medical treatment may even be necessary.

 

The species got its name because the larvae in later stages somewhat resemble a Persian cat. The caterpillar lives on host trees in the south of the USA and Central America. Oaks are their favourite hosts, but elms and citrus trees are also favoured . There are no reports of economic disadvantages to agricultural crops, so the best strategy is to leave these animals alone as they do not require environmentally-damaging chemicals for their control.

 

There are around 200 different butterflies and caterpillars with poisonous hairs worldwide, among them in Europe is the oak processionary moth, which occurs mainly in the Mediterranean area. Truly dangerous cases of poisoning are only recorded from a few species in America. Poisonous animals are often characterised by flamboyant coloration, thereby discouraging predators from eating them.

 

What role to leaf-eating insects like the «Puss moth caterpillar» play in ecosystems? Infested plants don’t like them much. But insects stimulate the food cycle with their excretions and thereby contribute to soil fertility. When individual plants and trees die they offer new habitats for other life forms.

 

 

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